Bobbin-holder.



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THOMAS J. MURDOCK, OF FRANKLIN, MASSACHUSETTS, ASS'GNOR TO M''RDOCK aGEB COMPANY, 0F FRANKLIN, MASSACHUSETTS.

BBBIN-HQLDER.

Application filed May 13, 1910.

To all who/m it may concern:

Be it known that I, THOMAS J. MUnDooK, a citizen of the United States,residing at llranklini in the county of Norfolk and State of'lilassachusetts, have iixvented a new and useful Ylinprovement inBobbin-Holoers, of which the following is a specification.

This invention relates to certain new and useful improvements in bobbinholders, and relates more particularly to the clamp thereof.

The object of the invention is to provide a hobbin holder which will becapable of acconnnoclating two forms of bobbins, commonly used inspinning mills.

t further object of the invention is to provide a clamp in whichcentrifugal action resulting from the rotary movement of the bobbin willcause an increase of gripping force exerted by the clamp on the bobbin.

A still further object of the invention is to generally improve andsimplify the construction and increase the efficiency and utility ofdevices of this character.

Still farther and other objects will later appear and be set forth.

ln the drawings-Figure 1 is a side elevation showing some of the partsbroken away and in section. lFig. 2 is a similar view showing adifferent form of bobbin. Fig. 3 is a side elevation showing the bobbinremoved and some of the parts in section. Fig. -1- is a top plan view ofFig. 3, and Fig. is a detail side elevation of one of the clamps and apart of the support-ing structure therefor, and Fig. G is a top planview of said part of the supporting structure.

The invention includes an outer vertically disposed ring 1 and aconcentric spaced horizontally disposed flat inner ring 2, the latterbeing connected to the ring 1 and being formed with an upwardlyextending right angular flange 3. lt will be understood that the flange3 is shaped to conformably engage the body l of the bobbin h olderproper, as clearly depicted in Fig. 3 of the drawings. A second verticalring 5 is formed with an outwardly projecting horizontal flange 6 and aninwardly extending horizontal flange 7, the latter being integral with adownwardly extending flange which latter conformably fits over theperiphery of thc upwardly extending flange 3 of the ring 2.

Specification of Letters Patent.

Patented July 25, 1911.

serial no. seines.

The outwardly extending flange 6 is formed with cut-out portions 9 whichlatter form outwardly projecting lugs or ears 10, the latter extendingthrough openings 11 provided therefor in the clamps 12. There are twopairs of clamps to accommodate an equal number (2) of varying forms ofbobbins, and in the present instance the drawings illustrate long clamps12 and short clamps 13. there being a pair of long clamps and a pair ofshort clamps arranged so as to be disposed in approximate diametricallyopposed relation. Each clamp is formed at its upper or free end with akink or bend lll adapted to engage in the case of the long clamps 12with the shoulder 15 of the bobbins 16 and in the case of the shortclamps with the grooves 17 of the bobbin 1S in a manner clearlyillustrated in Figs. 1 and 2 of the drawings. The lower ends of theclamps are of increased thickness as at 19 in the drawings for thepurpose of weighting the same at their lower ends, the object being toattract the effect of centrifugal motion on the clamps to the lower endsthereof causing the latter to move outwardly from the bobbin proper andeffecting a corresponding increase of inward movement to the upper endsof the clamps, thereby more rigidly clamping the bobbin and holding' itagainst slipping or other movement. By referring to F ig. 5 of thedrawings, it will be seen that the clamps 1Q are secured in the eut outportions 9 and that they have a pivotal movement about the lugs or ears10. The leaf or wire springs Q0 are arranged to bear against the innerfaces of the clamps '12 and lf3 at their lower ends as shown in Fig. 3of the drawings, there being two springs, one spring engaging a shortclamp and a long clamp in a manner illustrated in Fig. l of thedrawings, the spring having its ends turned outwardly and engaging inindentations or depressed seats formed therefor in the inner faces ofthe lower ends of the clamps.

It will be understood that the ring 1 by virtue of engaging about theflange 6, will hold the clamps in their relationship to the latter andin engagement with the ears, 10. It will be furthermore seen that theinner and outer rings cooperate to form a hollow housing in which thesprings 2O are conlined.

Having thus described my invention l claim as new and desire to secureby Letters Patent l. ln a bobbin holder, an outer ring having a verticaldisposition, a concentric spaced inner ring horizontally disposed andconnected to the outer ring, said inner ring being formed with anupwardly eX- tending right angular flange, a second vertical ring formedwith an outwardly projecting horizontal flange, and an inwardlyprojecting horizontal flange, a downwardlyextending vertical flangeintegral with said inwardly-extending flange, said downwardly ext-endingflange conformably fitting over the periphery of said upwardly extendingright angular flange of the first named ring, said outwardly extendingflange of the second vertical ring being' formed with cutaway partsleaving ears, clamps having openings through which openings said earsproject, the lower ends of said clamps being weighted, and springsengaging the lower ends of said clamps to urge the latter outwardly andthereby the upper ends of' the clamps inwardly.

2. In a bobbin holder, a ring formed with outwardly extending ears,clamps formed with openings in which said ears project, a

second ring surrounding the clamps to hold the same in their relation tosaid ears, and springs between the rings and engaging` the lower ends ofthe clamps.

3. In a bobbin holder, a ring having a vertical disposition and beingadapted to receive and engage over the bobbin spindle, a second ringhaving a portion thereof engaged over said ring whereby a doublethickness of metal is provided nextto the spindle, clamps, and means forpivoting the clamps.

4. In a bobbin holder, a ring having a vertical disposition and beingadapted to receive and engage over the bobbin spindle, a second ringhaving a portion thereof engaged over said ring whereby a doublethickness of metal is provided next to the spindle, clamps pivotallyconnected to the second ring, and a third ring engaging about the clampsand retaining the latter in their pivotal relation to the second ring.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

THOMAS J. MURDOCK.

litnesses ADA E. HAGERTY, J. A. MILLER..

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of atents, Vashington, D. C.

